Ooma Telo VOIP Phone System Base Free US Calling - Call anyone, anywhere in the U.S. Bundled calling features - Enjoy the convenience of caller-ID and call-waiting at no extra charge. Exceptional voice quality - Get the crisp, acoustic performance of a landline. Compatibility - Works with your existing corded or cordless phone no PC or headset required. Want to keep your phone number? Just pay a one-time porting fee of $39.99, Or enjoy complimentary number porting with an annual subscription to Ooma Premier ($119.99).